User:Tantoniak
Contents
Introduction
Hello my name is Thomas Antoniak and I'm a senior at Penn State majoring in Mechanical Engineering.
My career aspiration is to do research, design, or product and development work.
I am currently taking a class called Edsign 497J so I can learn as much about 3D printing and the printers themselves as I can.
I will be posting blogs pertaining to the class and the work I've done in and outside of class.
I added this class on 9/4 so I am a little behind compared to the class but I will make up ground now!
Blog 1
9/14 - I have learned a lot so far in the past weeks trying to make an extruder for the blue & white printer. So far, the biggest concern with this printer is the extruder that is missing from the machine. First, I tried to make my own out of a current extruder. I added wires from the heat source to the metal tip. After testing this, the wires did not hold up and the metal tip did not get hot.
Blog 2
9/21 - Recently, I added the wires via soldering the new wires to the ends of the old wires that were on the extruder before. The solder did not hold and a new plan needed to be implemented. I then re-taped the wires tightly with kevlar tape to hold in the heat on the metal surfaces. This worked and the tip reached over 100 degrees Celsius except the thermo-couple did not have consistently accurate readings and started to read error messages. Next, I removed the cement from the tip and wrapped the wires directly to see if that would work. The same heating followed by error messages occurred again.
Blog 3
10/1 - After learning a lot, my new tactic was that I sanded the final chips of cement off of the tip and wrapped the special coated wire that did not oxidize and attached this wire to the energy port wires with the thermo-couple. The best results occurred until more inconsistent readings of temperature. This is most likely due to the atmosphere cooling the tip and fluctuating the temperature reading. What has been learned over these past few weeks is how sensitive the heat tips are and the importance of materials used to trap heat in and not melt. Every part must be included and without cement to finish this heat tip, the part will not be fixed.
Blog 4
10/9 - The heat tip is almost finished. The final lesson learned today was that the heat source wires must be soldered in order to hold together the bond to the heating wire that wraps around. Being able to tuck the thermocouple wire underneath the wrapping wire allows all of the wiring to hold tight and not fall out. After taping the wire ends to the bottom of the heat source away from the tip, the wire is ready to be caulked. Lastly, wrapping the nycrhome wires starting with the middle of the wire and ending at the ends allow the wires to wrap evenly and be able to caulk most efficiently.
Blog 5
10/16 - After the heat tip wiring melted to the tip, the caulk had to be removed. The next time, I re-wrapped the tip with new wiring and realized that the thermo-couple reading was having issues. It turns out that there was a small part of the thermo-couple wiring sticking out and I needed to add more caulk to completely insulate it. I then connected the wires to the printer and set the heat value to 50 degrees. I kept increasing by 5 degrees until the outside caulk went from wet to solid. There was white smoke but that was normal. The heat tip should now be ready to use.
Blog 6
10/30 - I am now installing a purchased heat tip and learning how to add that in. The first problem was that the motherboard was not responding to our computer. This is different than the rest of the projects that I have done because this involves the coding and not the physical parts itself. Going through the coding requires using the Arduino software. This printer runs on the firmware, marlin. I downloaded that and then imported that firmware in arduino. This heat tip using a thermistor and not a thermo-couple so in the coding, I changed the number of extruders to 1 and changed the heating numbers to 3. This lets the printer know that the reading temperature is using a thermistor and not a thermo-couple. I found that in the coding, the lines with // in front are used as comments and tell you what the coding below tells. Then it's up to me to change the numbers for the correct components that I am working with.
Blog 7
NASA Is Building the World’s First 3-D Printed Satellite Camera
There are many different industries that Additive Manufacturing can make its mark on, but there aerospace world pertaining to space is not an area that I have heard a lot about. Most of the work in the aerospace field deals with airplanes and the turbine engine parts to power these aircrafts. In this article, NASA is working on building new parts with a 3D printer. There are tremendous benefits as stated in this article such as the cost and time reduction. This is because the printer can print multiple parts together as one which saves material and makes manufacturing/ assembling much easier.
More specifically, this article talks about a man by the name of Jason Budinoff and his work of designing a 2 inch camera for a space aircraft that will act as a miniature satellite. This camera requires only 4 parts while a conventional camera requires 5 to 10 times the number of parts. He is also working on a 14-inch dual channel telescope. It is highly possible to be able to print a working camera, but the problem comes from being able to test it to be “deep-space ready”. The tests used here are the vibration and thermal-vacuum tests. The actual process of replicating the part is made from sintering metal powder. This allows them to create internal cores and structures that are difficult or impossible with conventional manufacturing.
To create the mirror for the telescope, it is required to polish the metal being used. Due to the porosity of aluminum, it is difficult to polish so using a “hot isostatic pressing” process will covert the metal to a shiny surface. This process requires heating the surface and pressing 15 ksi of pressure. Once the part is made, it will be crucial to the development of infrared instruments that are exposed to very cold conditions. Usually they are made out of several different materials but this will be made out of just one material of aluminum.
Overall, I was very impressed that a 3D printer could make a part that will be in outer space. Current additive manufacturing is still working on regular products for customers nationwide so it I am amazed that engineers are taking the development to outer space before mastering inside the earth. Nonetheless, it is a very smart idea that they can create a part that will be made out of a single material. It makes the assembling much easier and keep costs low. I am very interested in this type of hot pressing process. I wonder if they can build that into the printer or if in the future years of development, if printers could have built in features for surface effects and mechanical properties. I was also wondering what type of mirror this is. I did not realize that the mirrors of such a high smoothness would result in being so shiny that it could reflect images, especially with such high precision such as a space telescope. It is remarkable with what you can do with a 3D printer and build complex parts with just one material and one printer.
http://mashable.com/2014/08/12/3d-printed-cubesat-camera/
Blog 7
Food is the Next Frontier of 3D Printing
The new wave of technology is 3D printing parts for assembly or for sale, but why can’t it go further than that and make food? Printer expert Janne Kyttanen has had success in printing pasta, cereal, and burgers. It is important to note however that these were printed in with typical materials and not actually edible. The point is to show people that it is possible to print foods. They are already printing chocolate which is a good feasibility sign that food can be printed and be edible. The science behind printing food comes from a material that is currently a liquid, powder, or filament. According to Kyttanen, it just comes down to being able to move atoms and molecules and it very possible. A tough part mentioned in the article is that the only way this concept will work is if there is a business plan to make money off of the idea. This includes the possibility of having a novelty shop that scans someone’s head and then prints it in chocolate. It is unique and people will want to buy it not only for the taste, but the design and idea. Another part of the business plan is that recipes are free so maybe one day, be craving a food, and download that food file and the printer produces the food that you want. This food printer would be awesome and I would love to have one when they start producing them. It changes the game for people who can’t cook and revolutionizes the way people think about food. There are many problems associated with this idea though. The same problems that exist with current printing methods of parts carry over to printing food. First, the filler material must be food so what type of filler would you have for a burger. Complex foods require many different ingredients so the printer would need to be equipped with many filler materials. Second, the printer will need to achieve a desired texture so that it will not be gross. I would compare this to the current challenge of printing mechanical properties. Overall, I really like this idea and am excited to see where the printers and technology go from here. http://www.dezeen.com/2013/03/27/food-is-the-next-frontier-of-3d-printing-janne-kytannen/
Blog 8
3d Printing, clothes & Sensors : for US soldiers
3D printing is now being used for the military for all types of new products including clothing, caps, chem-bio, gloves, hats, and helmet covers. This type of manufacturing provides a unique advantage because materials can be printed both soft and hard so that clothing is comfortable. The military is also using 3D printing for sensors and for food. There is a big market for this since there are many types of options to print. Some of the hot products range from toys to bird feeders. It is also very nice to be able to print many of someone’s designs of choice for clothing. There is already jewelry on market on Amazon that is 3D printed. 3D printing is more than just a technology but an art. Dr. Vuuren used the collaboration across 3 continents to make an amazing showcase. The creation is so cool to combine both art with engineering and I think that this will be a large art area that many people will pay more attention to. I also think that it is awesome to combine so many parts of the world into on display and it shows the interest in this technology worldwide.
